US20020112410A1 - Door suspension apparatus - Google Patents
Door suspension apparatus Download PDFInfo
- Publication number
- US20020112410A1 US20020112410A1 US10/034,014 US3401402A US2002112410A1 US 20020112410 A1 US20020112410 A1 US 20020112410A1 US 3401402 A US3401402 A US 3401402A US 2002112410 A1 US2002112410 A1 US 2002112410A1
- Authority
- US
- United States
- Prior art keywords
- door
- attached
- suspension assembly
- guide means
- assembly according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D15/00—Suspension arrangements for wings
- E05D15/06—Suspension arrangements for wings for wings sliding horizontally more or less in their own plane
- E05D15/0621—Details, e.g. suspension or supporting guides
- E05D2015/0695—Magnetic suspension or supporting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
Definitions
- the present invention relates generally to a door suspension assembly and, in particular, to a door suspension apparatus for an elevator car door.
- the European patent application No. 0 841 286 A1 discloses an elevator car door suspension assembly for opening and closing elevator car doors including a linear induction motor having a pair of movable motor primaries attached to a respective door hanger of each door and a stationary motor secondary attached to a header bracket which is secured to the elevator car, and wherein the motor secondary includes a substantially flat plate which is vertically disposed and is preferably made of a conductive metal such as copper.
- a pair of flexible ropes and wheels is needed to keep both panels moving synchronously.
- This driving apparatus for doors includes a door-like driven body, a conductive rail having an inverted T-shaped configuration serving as a secondary member of a linear motor, two travelling bodies being supported upon a base portion of the conductive rail by means of first rollers, and a primary coil of the linear motor and second rollers disposed upon side surfaces of the unit travelling bodies.
- a drawback with the elevator car door suspension assemblies of the known types is instability problems and increased installation and maintenance cost.
- a door suspension assembly includes a ferromagnetic flat plate horizontally extending from a support rail adapted to be attached to a door frame above a doorway or entrance portal.
- Two supporting blocks each have an opening in which a cylindrical bearing with an axial hole is located.
- the supporting blocks are attached to a door panel.
- Connectors extend downwardly from the flat plate and support a tube that extends through the holes in the bearings.
- a magnet array is supported by an upper plate attached to upper ends of the supporting blocks with a small magnetic gap between the magnet array and the flat plate such that the magnet array generates a magnetic force lifting the supporting blocks and the door panel.
- a primary of a linear motor is attached to the upper plate between the supporting blocks and cooperates with a secondary located in the interior of the tube to move the door panel relative to the flat plate.
- each door panel can be suspended in the manner described with the support rail and flat plate extending across the doorway to the extend required to provide adequate door travel.
- One of the advantages of a door suspension assembly according to the present invention is that it can be easily and inexpensively manufactured and easily and quickly installed.
- FIG. 1 is a schematic view of two door panels with a door suspension assembly for an elevator car according to the present invention
- FIG. 2 is a fragmentary schematic front elevation view of the door suspension assembly for one of the doors shown in FIG. 1;
- FIG. 3 is a side elevation view of the door suspension assembly shown in FIG. 2;
- FIG. 4 is a side elevation view similar to FIG. 3 of a second embodiment of the door suspension assembly according to the present invention.
- FIG. 5 is a schematic perspective view of the bearing shown in FIG. 3;
- FIG. 6 is a cross-section of a portion of the tube shown in FIG. 1 showing the secondary of a motor for said door suspension assembly according to the present invention
- FIG. 7A is a top plan view of a door suspension assembly shown in FIG. 1;
- FIG. 7B is a schematic front elevation view of the door suspension assembly shown in FIG. 7A.
- FIG. 1 A door suspension assembly according to the present invention is shown in FIG. 1 and includes a support means or rail support 1 , intended to be attached to a crosspiece of a door frame above the doorway or entrance portal.
- the system may be applied to doors, windows, opening portions as doorways of industrial buildings, houses, elevator cars, vehicles and the like.
- the rail support 1 has an I-profile, or an L-profile, or a T-profile.
- the rail support 1 includes or supports a substantially flat ferromagnetic plate 2 extending in a horizontally disposed plane. Attached to the rail support 1 at a lower surface of the plate 2 are two downwardly extending, spaced apart connectors 3 and 4 supporting opposite end portions of a rail 5 which preferably is substantially cylindrical shaped having the form of a hollow tube, e.g. made of non-magnetic stainless steel.
- the tube 5 and/or the flat plate 2 extend at least approximately the length of an associated door or have approximately the same length as the required door travel.
- a further connector 6 may be provided extending downwardly from the rail support 1 for holding a center of the tube 5 .
- the door suspension assembly includes two guide means each having a pair of supporting blocks 7 and 7 ′ for suspending two door panels 12 .
- each of the blocks 7 and 7 ′ has a recess or opening 8 and 8 ′ respectively in which the tube 5 is introduced.
- Attached to a lower or bottom surface 9 of one of the supporting blocks 7 is a first or lower plate 10 with connection means 11 (FIG. 3) from which a door or the door panel 12 is suspended.
- the connection means 11 preferably includes screws or other types of fastener for attachment to the door panel 12 .
- the door panel 12 is attached to the associated supporting block 7 ′ in a similar manner and a second door panel 12 is suspended in a similar manner from the other pair of supporting blocks.
- An upper or top surface 13 of the supporting block 7 is attached to an end area of a lower surface of a second or upper plate 14 whereas the supporting block 7 ′ is attached to the other end area of said upper plate 14 in a similar manner.
- a primary 15 of a linear motor is attached to the lower surface of the upper plate 14 via a connecting means 16 .
- the motor primary 15 includes a cylindrical type of winding.
- the primary 15 is placed in the space between the blocks 7 and 7 ′.
- the secondary of the linear motor is accommodated in an interior of the hollow tube 5 as described below.
- a magnet array 17 is also attached to the second plate 14 on an upper surface thereof.
- the magnetic array 17 may include rare earth permanent magnets, such as neodymium-iron-boron (NdFeB), cobalt, samarium or cheap hard permanent ferrite magnets disposed with alternating magnetic polarities.
- the door suspension assembly functions as a magnetic unit including the supporting blocks 7 and 7 ′, the lower plate 10 , the upper plate 14 , the motor primary 15 and the magnet array 17 attached to the plate 14 .
- the primary 15 also has an opening 18 (FIG. 2) which is coaxial with the openings 8 and 8 ′ of the blocks 7 and 7 ′ so that the tube 5 can traverse all the openings.
- the bushing 19 is substantially a cylindrical body with a longitudinally extending central hole 21 for receiving the tube 5 .
- the bushing 19 is a guide made from a sliding synthetic material; for example, a plastic material such as the “iglide J” bearing available from igus, inc. of E. Buffalo, R.I., or the “FluoroNyliner” bearing available from Thomson Industries, Inc. of Port Washington, N.Y., or a linear ball bushing, for example of the Thomson “Super Smart” type.
- the magnet array 17 generates a magnetic force lifting the plate 14 and hence the attached blocks 7 and 7 ′ supporting the door 12 .
- the magnet array 17 is constructed to cancel the most of the weight of the door panel 12 .
- This passive magnetic suspension of the door 12 reduces dramatically the radial force applied to the bearings 19 , as well as the overall friction in the system and the maximum required force of the motor.
- the magnetic attraction force between the magnet array 17 and the plate 2 is independent of the action of the tubular linear motor, i.e. with or without currents. It means that the passive magnetic suspension allows the door 12 to open faster, noiseless and maintenance-free, the motor and an additional converter to be smaller in size and the life of the linear bearings 19 to increase due to the load reduction.
- the bushings 19 slide along the tube 5 .
- the bearings 19 guide the motor primary 15 sliding along the tube 5 in case that the door weight is not fully suspended by the magnetic force.
- the door panel 12 is suspended with a small eccentricity relative to the axis of the hollow tube 5 which is received in the hole 21 .
- An L-shaped sheet 22 of a synthetic material or metal covers the front of the blocks 7 and 7 ′, the primary 15 and the magnet array 17 for aesthetic purposes.
- the rail support 1 preferably supports both the fixed ferromagnetic plate 2 and the fixed tube 5 .
- the linear motor primary 15 is attached to the door or panel door 12 via the connecting means 16 , the plate 14 , the blocks 7 , 7 ′ and the strip 10 .
- the door 12 will be moved together with the primary 15 .
- a small magnetic gap d (FIG. 3), e.g. of 1 to 2.5 mm.
- the individual magnets of the array 17 may be disposed with alternating polarity on a carrier as shown in FIGS. 7A and 7B.
- the carrier may be a back iron 31 .
- the array 17 may comprise segments (not shown) intermediate to inset-mounted individual permanent magnets, i.e. each sequence of magnetic elements comprises a flat permanent magnet e.g. with the N polarity above, an optional intermediate magnetic element, a flat permanent magnet with the S polarity above and an optional intermediate magnetic element.
- the width of the intermediate segments may be smaller than that of the individual permanent magnets.
- the back iron 31 is formed from a soft magnetic material such as mild steel, preferably having a relative high permeability ⁇ r >>1.
- the intermediate magnetic elements may be flat elements of mild iron or steel, plates of ferrite, preferably but not exclusively soft ferrite.
- the individual permanent magnets and/or other optional intermediate elements may be glued to the back iron 31 .
- the array 17 may be supported by the non-magnetic plate 14 .
- the non-magnetic plate 14 may be formed of aluminum or stainless steel, for example.
- the secondary of the linear motor includes a plurality of ring type permanent magnets such as magnets 23 and 24 shown in FIG. 6 that are accommodated in the interior of the hollow tube 5 . Between each pair of the magnets 23 and 24 , which preferably have a diametrically enhanced anisotropic direction of magnetization 25 , other cylindrical pieces 26 of non-magnetic material and/or soft iron may be located. Note that for rod magnets the direction of magnetization would point to the right for the magnet 23 and to the left for the magnet 24 . The actual sense of magnetization of the ring or rod magnets depends of the type of motor used.
- the motor primary 15 and the motor secondary 27 which are separated by an air gap, produce the thrust to drive the door panel 12 .
- This air gap is substantially a wall thickness D of the hollow tube 5 .
- the primary 15 may be supplied with electrical current from an electronic controller (not shown) that also controls the speed of the motor. Because of the tubular linear motor configuration, the normal force between the motor primary and the motor secondary is very well balanced. There is no additional guidance, such as roller, for the door panel 12 as required by a conventional linear motor door. However, a lower guiding joint 28 (FIG. 1) for the door or door panel 12 may also be used.
- the position control of the door suspension assembly according to the present invention may be achieved by sensors comprising a moving element 29 and a fixed device 30 (FIG. 1) arranged according to the prior art or by any other standard positioning system.
- the tubular linear motor is typically a permanent magnet tubular linear synchronous motor (PM-TLSM) according to the prior art.
- PM-TLSM permanent magnet tubular linear synchronous motor
- the linear motor elevator door will be based on a center-opening door system, and be driven by two PM-TLSMs separately. Therefore, the elevator door will operate with a very simple mechanical structure.
- the tubular motor can also be replaced by other types of motors, such as FLIMs/TLIMs or FLRMs/TLRMs etc. (wherein F means flat, T tubular, L linear, I inductance, R reluctance and M motor).
- the tube 5 should be mounted on the blocks 7 and 7 ′ prior to attachment to the connectors 3 , 4 and 6 .
- the guide means 7 and 7 ′ and/or the bearing 19 may also have a radial opening instead of the hole 21 .
- a simplified embodiment of the invention includes only the disclosed magnetic suspension, so that it can be fitted to the elevator hoistway door.
- the motor primary can be replaced by a non-magnetic mechanical support with two linear guides, and the motor secondary can be replaced by any tube or rod or rail without magnets inside.
- the guide means 7 and 7 ′ are made from a sliding synthetic material, for example the igus “iglide J” plastic material, the bearings 19 may be eliminated, and in this case the diameter of the opening 8 should be smaller, specifically, it must fit the tube or other equivalent element 5 .
- the guide means may include or may not include the bearing 19 .
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Elevator Door Apparatuses (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Support Devices For Sliding Doors (AREA)
Abstract
Description
- The present invention relates generally to a door suspension assembly and, in particular, to a door suspension apparatus for an elevator car door.
- The European patent application No. 0 841 286 A1 discloses an elevator car door suspension assembly for opening and closing elevator car doors including a linear induction motor having a pair of movable motor primaries attached to a respective door hanger of each door and a stationary motor secondary attached to a header bracket which is secured to the elevator car, and wherein the motor secondary includes a substantially flat plate which is vertically disposed and is preferably made of a conductive metal such as copper. In this system, in which the door panels are guided by separate rails, a pair of flexible ropes and wheels is needed to keep both panels moving synchronously.
- Another known design is a driving apparatus for doors such as is disclosed in U.S. Pat. No. 5,172,518 (Yoshino). This driving apparatus for doors includes a door-like driven body, a conductive rail having an inverted T-shaped configuration serving as a secondary member of a linear motor, two travelling bodies being supported upon a base portion of the conductive rail by means of first rollers, and a primary coil of the linear motor and second rollers disposed upon side surfaces of the unit travelling bodies.
- A drawback with the elevator car door suspension assemblies of the known types is instability problems and increased installation and maintenance cost.
- The present invention concerns an apparatus for the operation of suspended doors. A door suspension assembly includes a ferromagnetic flat plate horizontally extending from a support rail adapted to be attached to a door frame above a doorway or entrance portal. Two supporting blocks each have an opening in which a cylindrical bearing with an axial hole is located. The supporting blocks are attached to a door panel. Connectors extend downwardly from the flat plate and support a tube that extends through the holes in the bearings. A magnet array is supported by an upper plate attached to upper ends of the supporting blocks with a small magnetic gap between the magnet array and the flat plate such that the magnet array generates a magnetic force lifting the supporting blocks and the door panel. A primary of a linear motor is attached to the upper plate between the supporting blocks and cooperates with a secondary located in the interior of the tube to move the door panel relative to the flat plate.
- If two door panels are used to provide center opening, each door panel can be suspended in the manner described with the support rail and flat plate extending across the doorway to the extend required to provide adequate door travel.
- One of the advantages of a door suspension assembly according to the present invention is that it can be easily and inexpensively manufactured and easily and quickly installed.
- The above, as well as other advantages of the present invention, will become readily apparent to those skilled in the art from the following detailed description of a preferred embodiment when considered in the light of the accompanying drawings in which:
- FIG. 1 is a schematic view of two door panels with a door suspension assembly for an elevator car according to the present invention;
- FIG. 2 is a fragmentary schematic front elevation view of the door suspension assembly for one of the doors shown in FIG. 1;
- FIG. 3 is a side elevation view of the door suspension assembly shown in FIG. 2;
- FIG. 4 is a side elevation view similar to FIG. 3 of a second embodiment of the door suspension assembly according to the present invention;
- FIG. 5 is a schematic perspective view of the bearing shown in FIG. 3;
- FIG. 6 is a cross-section of a portion of the tube shown in FIG. 1 showing the secondary of a motor for said door suspension assembly according to the present invention;
- FIG. 7A is a top plan view of a door suspension assembly shown in FIG. 1; and
- FIG. 7B is a schematic front elevation view of the door suspension assembly shown in FIG. 7A.
- A door suspension assembly according to the present invention is shown in FIG. 1 and includes a support means or
rail support 1, intended to be attached to a crosspiece of a door frame above the doorway or entrance portal. The system may be applied to doors, windows, opening portions as doorways of industrial buildings, houses, elevator cars, vehicles and the like. Preferably, therail support 1 has an I-profile, or an L-profile, or a T-profile. - The
rail support 1 includes or supports a substantially flatferromagnetic plate 2 extending in a horizontally disposed plane. Attached to therail support 1 at a lower surface of theplate 2 are two downwardly extending, spaced apartconnectors rail 5 which preferably is substantially cylindrical shaped having the form of a hollow tube, e.g. made of non-magnetic stainless steel. Thetube 5 and/or theflat plate 2 extend at least approximately the length of an associated door or have approximately the same length as the required door travel. Afurther connector 6 may be provided extending downwardly from therail support 1 for holding a center of thetube 5. - As shown in FIG. 1, the door suspension assembly includes two guide means each having a pair of supporting
blocks door panels 12. Referring to FIGS. 2 to 4, each of theblocks tube 5 is introduced. Attached to a lower orbottom surface 9 of one of the supportingblocks 7 is a first orlower plate 10 with connection means 11 (FIG. 3) from which a door or thedoor panel 12 is suspended. The connection means 11 preferably includes screws or other types of fastener for attachment to thedoor panel 12. Thedoor panel 12 is attached to the associated supportingblock 7′ in a similar manner and asecond door panel 12 is suspended in a similar manner from the other pair of supporting blocks. - An upper or
top surface 13 of the supportingblock 7 is attached to an end area of a lower surface of a second orupper plate 14 whereas the supportingblock 7′ is attached to the other end area of saidupper plate 14 in a similar manner. A primary 15 of a linear motor is attached to the lower surface of theupper plate 14 via aconnecting means 16. Typically, the motor primary 15 includes a cylindrical type of winding. Preferably, the primary 15 is placed in the space between theblocks hollow tube 5 as described below. - A
magnet array 17 is also attached to thesecond plate 14 on an upper surface thereof. Themagnetic array 17 may include rare earth permanent magnets, such as neodymium-iron-boron (NdFeB), cobalt, samarium or cheap hard permanent ferrite magnets disposed with alternating magnetic polarities. Accordingly, the door suspension assembly functions as a magnetic unit including the supportingblocks lower plate 10, theupper plate 14, the motor primary 15 and themagnet array 17 attached to theplate 14. Naturally, the primary 15 also has an opening 18 (FIG. 2) which is coaxial with theopenings blocks tube 5 can traverse all the openings. - Accommodated in the opening8 of each supporting
block 7 there is a bearing or bushing 19, like a linear plain bushing or a linear ball bushing, located in the air gap of thesupport block 7 between thetube 5 and a wall 20 (FIG. 3) of the opening 8 (FIG. 2). As seen in FIGS. 3 to 5, thebushing 19 is substantially a cylindrical body with a longitudinally extendingcentral hole 21 for receiving thetube 5. Preferably, thebushing 19 is a guide made from a sliding synthetic material; for example, a plastic material such as the “iglide J” bearing available from igus, inc. of E. Providence, R.I., or the “FluoroNyliner” bearing available from Thomson Industries, Inc. of Port Washington, N.Y., or a linear ball bushing, for example of the Thomson “Super Smart” type. - The
magnet array 17 generates a magnetic force lifting theplate 14 and hence the attachedblocks door 12. Themagnet array 17 is constructed to cancel the most of the weight of thedoor panel 12. This passive magnetic suspension of thedoor 12 reduces dramatically the radial force applied to thebearings 19, as well as the overall friction in the system and the maximum required force of the motor. The magnetic attraction force between themagnet array 17 and theplate 2 is independent of the action of the tubular linear motor, i.e. with or without currents. It means that the passive magnetic suspension allows thedoor 12 to open faster, noiseless and maintenance-free, the motor and an additional converter to be smaller in size and the life of thelinear bearings 19 to increase due to the load reduction. When the motor is active, thebushings 19 slide along thetube 5. Thebearings 19 guide the motor primary 15 sliding along thetube 5 in case that the door weight is not fully suspended by the magnetic force. - In the alternate embodiment according to FIG. 4, the
door panel 12 is suspended with a small eccentricity relative to the axis of thehollow tube 5 which is received in thehole 21. An L-shapedsheet 22 of a synthetic material or metal covers the front of theblocks magnet array 17 for aesthetic purposes. - The
rail support 1 preferably supports both the fixedferromagnetic plate 2 and the fixedtube 5. As seen in FIGS. 1 and 2, thelinear motor primary 15 is attached to the door orpanel door 12 via the connectingmeans 16, theplate 14, theblocks strip 10. Thus thedoor 12 will be moved together with the primary 15. Between themagnet array 17 and the bottom surface of theplate 2 there is a small magnetic gap d (FIG. 3), e.g. of 1 to 2.5 mm. - Due to the relatively high attraction between the
magnet array 17 and theflat plate 2, it is convenient to use arigid rail support 1 so that no deflection and change in the air gap d dimension can occur. This requirement is fulfilled by thehollow tube 5 and the high stiffness of theflat plate 2. - The individual magnets of the
array 17 may be disposed with alternating polarity on a carrier as shown in FIGS. 7A and 7B. The carrier may be aback iron 31. Thearray 17 may comprise segments (not shown) intermediate to inset-mounted individual permanent magnets, i.e. each sequence of magnetic elements comprises a flat permanent magnet e.g. with the N polarity above, an optional intermediate magnetic element, a flat permanent magnet with the S polarity above and an optional intermediate magnetic element. The width of the intermediate segments may be smaller than that of the individual permanent magnets. Preferably, theback iron 31 is formed from a soft magnetic material such as mild steel, preferably having a relative high permeability μr>>1. The intermediate magnetic elements may be flat elements of mild iron or steel, plates of ferrite, preferably but not exclusively soft ferrite. The individual permanent magnets and/or other optional intermediate elements may be glued to theback iron 31. As illustrated in FIG. 6 and FIG. 7B, thearray 17 may be supported by thenon-magnetic plate 14. Thenon-magnetic plate 14 may be formed of aluminum or stainless steel, for example. - The secondary of the linear motor includes a plurality of ring type permanent magnets such as
magnets hollow tube 5. Between each pair of themagnets magnetization 25, othercylindrical pieces 26 of non-magnetic material and/or soft iron may be located. Note that for rod magnets the direction of magnetization would point to the right for themagnet 23 and to the left for themagnet 24. The actual sense of magnetization of the ring or rod magnets depends of the type of motor used. Themotor primary 15 and the motor secondary 27, which are separated by an air gap, produce the thrust to drive thedoor panel 12. This air gap is substantially a wall thickness D of thehollow tube 5. As usual, the primary 15 may be supplied with electrical current from an electronic controller (not shown) that also controls the speed of the motor. Because of the tubular linear motor configuration, the normal force between the motor primary and the motor secondary is very well balanced. There is no additional guidance, such as roller, for thedoor panel 12 as required by a conventional linear motor door. However, a lower guiding joint 28 (FIG. 1) for the door ordoor panel 12 may also be used. - The position control of the door suspension assembly according to the present invention may be achieved by sensors comprising a moving
element 29 and a fixed device 30 (FIG. 1) arranged according to the prior art or by any other standard positioning system. - The tubular linear motor is typically a permanent magnet tubular linear synchronous motor (PM-TLSM) according to the prior art. As an example, the linear motor elevator door will be based on a center-opening door system, and be driven by two PM-TLSMs separately. Therefore, the elevator door will operate with a very simple mechanical structure. However, the tubular motor can also be replaced by other types of motors, such as FLIMs/TLIMs or FLRMs/TLRMs etc. (wherein F means flat, T tubular, L linear, I inductance, R reluctance and M motor).
- The
tube 5 should be mounted on theblocks connectors bearing 19 may also have a radial opening instead of thehole 21. - A simplified embodiment of the invention includes only the disclosed magnetic suspension, so that it can be fitted to the elevator hoistway door. This means that the motor primary can be replaced by a non-magnetic mechanical support with two linear guides, and the motor secondary can be replaced by any tube or rod or rail without magnets inside.
- If the guide means7 and 7′ are made from a sliding synthetic material, for example the igus “iglide J” plastic material, the
bearings 19 may be eliminated, and in this case the diameter of theopening 8 should be smaller, specifically, it must fit the tube or otherequivalent element 5. Generally speaking, the guide means may include or may not include thebearing 19. - Other advantages of the system according to the present invention are that a high reliability can be achieved due to the great reduction in the number of parts in comparison with the prior art systems and the use of nearly maintenance-free components; the volume of the motor and the inverter can also be reduced; extra heat generated in the primary can be avoided; no special bearings are needed to keep the motor air gap constant, avoiding so stability and maintenance problems; and additional flexible ropes and wheels are not needed.
- In accordance with the provisions of the patent statutes, the present invention has been described in what is considered to represent its preferred embodiment. However, it should be noted that the invention can be practiced otherwise than as specifically illustrated and described without departing from its spirit or scope.
Claims (19)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00811229 | 2000-12-22 | ||
EP00811229.4 | 2000-12-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
US20020112410A1 true US20020112410A1 (en) | 2002-08-22 |
US20030221374A9 US20030221374A9 (en) | 2003-12-04 |
US7013605B2 US7013605B2 (en) | 2006-03-21 |
Family
ID=8175098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/034,014 Expired - Fee Related US7013605B2 (en) | 2000-12-22 | 2002-01-03 | Door suspension apparatus |
Country Status (4)
Country | Link |
---|---|
US (1) | US7013605B2 (en) |
JP (1) | JP2002211859A (en) |
CN (1) | CN1147661C (en) |
CA (1) | CA2365823C (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040055829A1 (en) * | 2002-09-23 | 2004-03-25 | Morris Nigel Bruce | Tubular linear synchronous motor door and encoder-less control |
WO2006039971A1 (en) * | 2004-10-17 | 2006-04-20 | Dorma Gmbh + Co. Kg | Sliding door comprising a linear motor drive |
EP1688576A2 (en) * | 2005-01-14 | 2006-08-09 | Dorma Gmbh & Co. Kg | Sliding door with a magnetic drive system and an emergency escape functionality |
EP1706345A2 (en) * | 2003-11-17 | 2006-10-04 | Otis Elevator Company | Magnetic elevator door mover |
EP1681426A3 (en) * | 2005-01-14 | 2013-01-09 | Dorma GmbH + Co. KG | Sliding door with magnetic drive system and individually opening doors and their control process |
CN103221624A (en) * | 2010-11-22 | 2013-07-24 | 三菱电机株式会社 | Elevator car |
US20160340952A1 (en) * | 2014-01-17 | 2016-11-24 | Mgt Industries S.R.L. | Sliding door with magnetic support |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10257582A1 (en) * | 2002-12-09 | 2004-09-30 | Dorma Gmbh + Co. Kg | Stabilization for a guide carriage, in particular for a sliding door or the like that can be moved by a linear drive |
US7331302B2 (en) * | 2004-06-18 | 2008-02-19 | Stanley Secretan | Quick close security door system |
US20060150518A1 (en) * | 2005-01-07 | 2006-07-13 | Hunter Douglas Industries Bv | Support for a sliding panel |
US8215061B2 (en) * | 2005-02-01 | 2012-07-10 | Dirtt Environmental Solutions Ltd. | Sliding door apparatus having a damping mechanism |
US8132653B2 (en) * | 2005-07-21 | 2012-03-13 | Otis Elevator Company | Controlling elevator door orientation during door movement |
DE102007032474A1 (en) * | 2007-07-10 | 2009-01-29 | Dorma Gmbh + Co. Kg | Sliding door suspension with integrated linear drive |
US8020346B2 (en) * | 2007-08-16 | 2011-09-20 | Joseph Singiser | Magnetically supported sliding track system |
ES2323037B1 (en) * | 2007-10-25 | 2010-04-08 | Klein Iberica, S.A. | MECHANISM OF REGULATION FOR SLIDING DOORS. |
DE202010004307U1 (en) * | 2010-03-26 | 2011-08-26 | Rehau Ag + Co. | closure assembly |
US8274188B2 (en) | 2010-04-14 | 2012-09-25 | Ricon Corp. | Magnetic-assisted linear bearing |
CN103203655A (en) * | 2012-01-11 | 2013-07-17 | 昆山允升吉光电科技有限公司 | Mechanism for strengthening flatness of tabletop of operating table |
CN102536039B (en) * | 2012-01-20 | 2014-10-29 | 佛山市荣高智能科技有限公司 | Method for applying magnetic levitation to sliding door |
US8707626B2 (en) * | 2012-08-13 | 2014-04-29 | Matthew H. Martin | Magnetic system for supporting a sliding closure |
ITMO20130050A1 (en) * | 2013-02-25 | 2014-08-26 | Rota Infissi S R L | GUIDE SYSTEM FOR SLIDING DOOR. |
PT106928B (en) * | 2013-05-06 | 2019-05-06 | Hiperjanelas Lda | MAGNETIC LEVERING SYSTEM FOR DOORS AND WINDOWS |
US9879458B2 (en) * | 2014-01-27 | 2018-01-30 | Stefano Gabriel | Easily displaceable sliding door |
CN105041095B (en) * | 2015-03-10 | 2017-03-15 | 中北大学 | Magnetic suspension self-powered vertical hinged automatic door |
US20170314270A1 (en) * | 2016-04-27 | 2017-11-02 | ZL Innovations, Inc. | Magnetized reinforcing bar protective cap |
CN107940671B (en) * | 2017-11-03 | 2019-10-01 | 广东美的制冷设备有限公司 | Opening-closing structure control method, air conditioner and the readable storage medium storing program for executing of air conditioner |
CN110040613B (en) * | 2019-04-18 | 2021-12-10 | 日立电梯(中国)有限公司 | Load-bearing mechanism and load-bearing method of door panel and elevator comprising load-bearing mechanism |
CN113023534B (en) * | 2021-03-30 | 2021-08-24 | 中国科学院宁波材料技术与工程研究所 | Gantry crane system based on double linear motors and synchronous motion control method thereof |
GB2611073A (en) * | 2021-09-26 | 2023-03-29 | John Sherwood Graham | Lift door linear rail guidance system |
CN113911883B (en) * | 2021-10-21 | 2023-07-14 | 浙江智菱科技有限公司 | Elevator door machine |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3663376D1 (en) | 1985-03-20 | 1989-06-22 | Shinko Electric Co Ltd | DOOR APPARATUS |
US4839543A (en) | 1988-02-04 | 1989-06-13 | Trilogy Systems Corporation | Linear motor |
DE4016948A1 (en) | 1990-05-25 | 1991-11-28 | Geze Gmbh & Co | Contactless magnetic guidance system esp. for sliding door - exploits mutual repulsion of like poles of radial permanent magnets at edges of mouldings and guide |
JPH0745746Y2 (en) | 1990-11-07 | 1995-10-18 | 川崎重工業株式会社 | Drives such as doors |
JP2645247B2 (en) * | 1992-04-14 | 1997-08-25 | 株式会社ツーデン | Power supply for automatic door control |
US5668355A (en) * | 1994-04-07 | 1997-09-16 | Otis Elevator Company | Elevator cab door drive system |
US5612518A (en) * | 1994-04-08 | 1997-03-18 | Otis Elevator Company | Linear induction motor door drive assembly for elevators |
US5736693A (en) * | 1995-09-25 | 1998-04-07 | Otis Elevator Company | Elevator door drive using dual secondary linear induction motor |
US5841082A (en) * | 1996-11-07 | 1998-11-24 | Otis Elevator Company | Secondary guidance system for linear induction motors driving elevator car doors |
US5862887A (en) * | 1996-11-07 | 1999-01-26 | Otis Elevator Company | High performance linear induction motor door operator |
US5949036A (en) * | 1998-10-21 | 1999-09-07 | Otis Elevator Company | Double linear motor and elevator doors using same |
JP3972575B2 (en) * | 2000-11-02 | 2007-09-05 | 株式会社日立製作所 | Door system |
-
2001
- 2001-12-13 JP JP2001379504A patent/JP2002211859A/en active Pending
- 2001-12-21 CA CA2365823A patent/CA2365823C/en not_active Expired - Fee Related
- 2001-12-24 CN CNB011449381A patent/CN1147661C/en not_active Expired - Fee Related
-
2002
- 2002-01-03 US US10/034,014 patent/US7013605B2/en not_active Expired - Fee Related
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040055829A1 (en) * | 2002-09-23 | 2004-03-25 | Morris Nigel Bruce | Tubular linear synchronous motor door and encoder-less control |
US6943508B2 (en) * | 2002-09-23 | 2005-09-13 | Otis Elevator Company | Tubular linear synchronous motor control for elevator doors |
US20050205362A1 (en) * | 2002-09-23 | 2005-09-22 | Otis Elevator Company | Tubular linear synchronous motor control for elevator doors |
US7202615B2 (en) | 2002-09-23 | 2007-04-10 | Otis Elevator Company | Tubular linear synchronous motor control for elevator doors |
EP1706345A2 (en) * | 2003-11-17 | 2006-10-04 | Otis Elevator Company | Magnetic elevator door mover |
EP1706345A4 (en) * | 2003-11-17 | 2010-03-10 | Otis Elevator Co | Magnetic elevator door mover |
WO2006039971A1 (en) * | 2004-10-17 | 2006-04-20 | Dorma Gmbh + Co. Kg | Sliding door comprising a linear motor drive |
EP1688576A2 (en) * | 2005-01-14 | 2006-08-09 | Dorma Gmbh & Co. Kg | Sliding door with a magnetic drive system and an emergency escape functionality |
EP1688576A3 (en) * | 2005-01-14 | 2012-11-14 | Dorma GmbH + Co. KG | Sliding door with a magnetic drive system and an emergency escape functionality |
EP1681426A3 (en) * | 2005-01-14 | 2013-01-09 | Dorma GmbH + Co. KG | Sliding door with magnetic drive system and individually opening doors and their control process |
CN103221624A (en) * | 2010-11-22 | 2013-07-24 | 三菱电机株式会社 | Elevator car |
US20160340952A1 (en) * | 2014-01-17 | 2016-11-24 | Mgt Industries S.R.L. | Sliding door with magnetic support |
Also Published As
Publication number | Publication date |
---|---|
CN1360133A (en) | 2002-07-24 |
CN1147661C (en) | 2004-04-28 |
JP2002211859A (en) | 2002-07-31 |
US7013605B2 (en) | 2006-03-21 |
US20030221374A9 (en) | 2003-12-04 |
CA2365823A1 (en) | 2002-06-22 |
CA2365823C (en) | 2010-03-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7013605B2 (en) | Door suspension apparatus | |
US6832449B2 (en) | Door suspension system | |
EP0195585B1 (en) | Door apparatus | |
JPH0745745Y2 (en) | Moving magnet linear motor for automatic doors | |
US5141082A (en) | Linear motor elevator system | |
US5535853A (en) | Actuator having a two ended actuator rod movable longitudinally and transversely | |
HU205302B (en) | Magnetic system for forwarding loads with low friction loss | |
US10208431B1 (en) | Permanent magnet maglev using passive, low-frequency electromagnetic stabilization | |
CA2329664A1 (en) | Combined bearing and drive system | |
US11001277B2 (en) | Door actuators, integrated door actuator and method of operating a door actuator of a transit vehicle | |
KR102434518B1 (en) | Magnetic Suspension for Vehicles | |
US6742631B2 (en) | Secondary part of a linear motor, method for the production thereof, linear motor with secondary part and use of the linear motor | |
CN1280547A (en) | Elevator Guide shoe | |
EP1217160A2 (en) | Door suspension system | |
EP1217161A2 (en) | Door suspension assembly | |
US11691851B2 (en) | Linear drive system for an elevator installation | |
KR20220147808A (en) | Sliding Automatic Door System with Magnetic Drive | |
JPH04148785A (en) | Driving device for elevator | |
JPH1095533A (en) | Magnetic levitation type carrying equipment | |
CN114920015A (en) | Guide structure of magnetic suspension slide rail | |
JPS596151Y2 (en) | Structure to prevent lifting force of drive unit | |
JPH03166120A (en) | Floating type transport device | |
JP2003212457A (en) | Elevator | |
JPH02270727A (en) | Conveying facility utilizing linear motor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: INVENTIO AG, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZHOU, TIAN;RENNETAUD, JEAN-MARIE;REEL/FRAME:012789/0678;SIGNING DATES FROM 20011204 TO 20020115 Owner name: INVENTIO AG, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZHOU, TIAN;RENNETAUD, JEAN-MARIE;SIGNING DATES FROM 20011204 TO 20020115;REEL/FRAME:012789/0678 |
|
CC | Certificate of correction | ||
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20140321 |